E-Cigarette Controller Liquid Detection and Heating Control
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Solution Overview
Problem
Conventional electronic cigarettes cannot detect the amount of tobacco liquid, leading to inadequate vaporization and unpleasant heating when the liquid is depleted, as they lack a mechanism to monitor and manage the liquid level.
Innovation Solution
An electronic cigarette controller with a control chip that includes a smoking detecting module, a tobacco liquid detecting module, and a display module, which samples the tobacco liquid's electric current value to determine if it's below a preset reference level, stopping drive signals to prevent heating when the liquid is low, thus preventing unpleasant smells and ensuring optimal performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the electronic cigarette continues to heat when tobacco liquid is depleted, then the heater strip can maintain heating function, but it generates unpleasant smell and fails to provide adequate vaporization
Solution Approach 1:
The control chip performs preliminary detection of tobacco liquid amount before heating occurs. When the liquid level is low, the system preemptively stops sending drive signals to the heater strip, preventing the unpleasant smell from generating in the first place rather than reacting after the problem occurs.
Solution Approach 2:
The system implements feedback control by continuously monitoring the tobacco liquid amount through the detecting module and adjusting the heating control accordingly. When the liquid level drops below the reference value, the feedback loop automatically stops the heating function to prevent harmful effects while maintaining optimal vaporization quality.
2Reliability
If the electronic cigarette lacks a tobacco liquid detection mechanism, then the device structure remains simple, but it cannot detect tobacco liquid amount leading to inadequate vaporization and unpleasant heating
Solution Approach 1:
The control chip integrates multiple functions including smoking detection, tobacco liquid amount detection, and heating control into a single device. This multi-functional integration achieves reliable tobacco liquid detection capability while minimizing the increase in device complexity by using existing control chip resources for multiple purposes.
Solution Approach 2:
The control chip utilizes its own internal resources and existing detection capabilities to monitor tobacco liquid amount, rather than requiring completely separate dedicated detection hardware. The system serves itself by using the control chip's processing power and detection modules to monitor and manage the tobacco liquid level.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The controller effectively manages the electronic cigarette's operation by stopping heating when the tobacco liquid is depleted, maintaining a pleasant experience and preventing unpleasant odors, while also providing charging and protection features through its integrated modules.
Implementation Method 1
a smoking detecting module used for detecting a capacitance change of an external mouthpiece
Implementation Method 2
the amount value of the tobacco liquid is an electric current value flowing through a pin of the tobacco liquid detecting module
Implementation Method 3
A heater strip in the electronic cigarette vaporizes tobacco liquid to vapor
Data Source
AI summary
An electronic cigarette controller includes a control chip. The control chip includes: a smoking detecting module used for detecting a capacitance change of an external mouthpiece; a control module used for sending drive and control signals according to the smoking signal, or stopping sending drive and control signals according to the standby signal; a drive module used for receiving the drive and control signals and outputting electric current to drive the electronic cigarette to work; and a tobacco liquid detecting module used for sampling an amount value of a tobacco liquid of the electronic cigarette and determining whether the amount value of the tobacco liquid is less than a preset reference value, if yes, the control module stops sending the drive and control signals. The present disclosure describes an electronic cigarette that can detect an amount of the tobacco liquid.